Hello everyone. This is my first post, so please try to bear with me I followed to guide to unnatended installation of Windows on this web site and I must say it works quite well. I slipstreamed all the needed updates and Windows Media Player 10 without any problem. I even changed the directory for document and settings. Now, I also tried to change the program files directory but it didn't work as planned. Actually... it didn't work at all. A Set command revealed that the path stayed the same on my new installation on a VMWare Station. Here is the code I used. [Unattended] UnattendMode=GuiAttended OemSkipEula=Yes OemPreinstall=No TargetPath=\WINDOWS FileSystem=* UnattendSwitch="yes" WaitForReboot="No" ProgramFilesDir="D:\" CommonProgramFilesDir="D:\Common Files" Is it because it cannot be at the root of another partition? I will await your answers.